ViewSonic VG900b-1 User Manual

Service ManualViewSonic VG900b-1 (VG900b-1_SM_575-Rev. 1.0-October 2002)ViewSonic381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583M

YESYESYESNOCHECK 5V,3.3VB,LCD_VCC & 3V3_MCUSTARTPOWER CKT(12V,+5V & 3.3V CKT)POWER CKTCHECK POWER CKTENDViewSonic Corporation 7Confidential –

YESYESNONOOKYESSIGNALCheck U3 O/P TO SD1210 CKTADC CKTCHECK I/P R,G & B Video,HSYNC(pin 30),Coast(pin 31) AND I2C BUS SignalSTARTCHECK MCU CK

YESNONOYESYESOKMCU CKT STARTMCU CKTCHECK U15 RESET(pin19),12MHZ(Pin7,8),H_sync (pin 14)&V_sync(pin13) SIGNALCHECK MCU_I2C(pin

ViewSonic Corporation 10Confidential – Do Not CopyVG900b-1SD1210 CKTSTARTENDSD1210 CKTREPLACE U8CHECK U14 RE0-RE7,RO0-RO7DATA RIN0-RIN7,BIN0-BIN7 ANDG

YESYESOKYESNOYESNOOKOSD CKTENDCHECK U11 OSD_CLK(Pin6),U8 OSD_HS (Pin31),OSD_VS(Pin 32) SIGNALCHECK U15 FBLK(Pin42),OSD_B(Pin 43) ,OSD_G(Pin44) And

ViewSonic Corporation 12Confidential – Do Not CopyVG900b-1YESYESNONOYESYESOKPLL1 CKTCHECK U11 FCLK1(Pin 1)and 2 PLL1_H(Pin 2)SIGNALCHECK U11 PIN 6 CLO

YESYESNOYESSTARCHECKLCD_VCC,V+3.3V,+5.0V,+12V AND AUDIO +9.0VENDPANEL POWER CKTPANEL POWER CHECKPOWER CKT(+3.3V, +5V,+12V AND AUDIO +9.0VViewSonic Cor

AUDIO CKT ViewSonic Corporation 14Confidential – Do Not CopyVG900b-1

ItemNo.ProductNo.ViewSonic P/N Part No. LocationQTY(pcs)1 102001 VSILA4635A----- U22 12 102002 VSIPJ7809CZ---- U24 13 102002A VSIPL7809B----- U24 2nd

8 200006C VSI24C16ADP01-- SECOND SOURCE 19 200006D VSI24C16BP3---- SECOND SOURCE 110 200006E VSI24WC16P----- SECOND SOURCE 111 200007 E-IC-0401-2584 V

CopyrightCopyright ¤ 2002 by ViewSonic Corporation. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, st

78 260034 VST2N3906-----A Q3,4 279 260035 VST2N3904-----A Q1,2,5,8,9,10,11,12 880 260035A VSTMMBT3904T-MA SECOND SOURCE 881 260035B VSTMMBT3904LT-A SE

ItemNo.ProductNo.ViewSonic P/N Part No. LocationQTY(pcs)1 414701 PL-PS-0715-0975 GSTN-2875D8F--A BASE 12 414702 M-CV-0830-2352 GSTN-2876D8F--A BASE FR

ItemNo.ProductNo.ViewSonic P/N Part No. LocationQTY(pcs)1 421001 M-LCD-0826-0136 VVLFLC48SXC8V-- FUJISTU PANEL (19") 12 421002 B-MB-0201-0697 DPW

8.EXPLODED DIAGRAMViewSonic Corporation 20Confidential – Do Not CopyVG900b-1

ViewSonic Corporation 21Confidential – Do Not CopyVG900b-1NO VIEWSONIC P/N PART NO QTY REMARK1 C-FP-0301-0894 GCABA2104D8F--- 1 CAB-A2 CPWB-5419T8FUSA

DPWBN5419T8----BOARD ID: QPWB-5419T8---CT1T2T3T4T5T6T7T8T9T10T11VCLK00ASIC_HMCU_V_INMCU_H_INCOAST9883_HS9883_VSVSYNC_DDC+3V3A3V3P3V39883-140C VIEWSONI

PKA_GNDPKP_GNDPKP_GNDPKA_GNDGNDGNDDPWBN5419T8----BOARD ID: QPWB-5419T8---CT20T21T22T23T24T25T26T27D3_3VP3_3VO3_3VA3_3VHSYNC_DVSYNC_DDE_INVCLK01SIL151C

BOARD ID: QPWB-5419T8---CDPWBN5419T8----T30T31T32T33T34T35T36T37T38T39T40T41T42T43T44T45ROM_SCLROM_SDAASIC_SCLASIC_SDALCD_DELCD_CLKOSD_VSOSD_HSVCLK1FC

High for AnalogBOARD ID: QPWB-5419T8---CDPWBN5419T8----OSD & PLL1CViewSonic VG900bCustom48Thursday, July 04, 2002TitleSize Document NumberRevDate:

BOARD ID: QPWB-5419T8---CDPWBN5419T8----LVDS INTERFACECViewSonic VG900bCustomThursday, July 04, 2002TitleSize Document NumberRevDate:SheetofRA1RA2RA0R

TABLE OF CONTENTS ViewSonic Corporation iiConfidential – Do Not CopyVG900b-11.PRECAUTIONS AND NOTICES...

BOARD ID: QPWB-5419T8---CDPWBN5419T8----SMO230CViewSonic VG900bCustomThursday, July 04, 2002TitleSize Document NumberRevDate:SheetofAMBER_LEDLED_GRNLE

BOARD ID: QPWB-5419T8---CDPWBN5419T8----add silk position "U18A"T50T51T52T53T545VaBL_ENABLEBL_ADJUSTLCD_VCC12V_AUDIOPOWERCViewSonic VG900bCu

BOARD ID: QPWB-5419T8---CDPWBN5419T8----I/O INTERFACECViewSonic VG900bCustomThursday, July 04, 2002TitleSize Document NumberRevDate:SheetofR_INVGA_CON

GND_AUDIO GND_PRE*******************JP3AUDIO-ViewSonic VG900bBThursday, July 04, 2002TitleSize Document NumberRevDate:SheetofAV1_RAV1_LAV1_R12VB12VB12

KEYPAD<Title>A10 10Thursday, July 04, 2002TitleSize Document NumberRevDate: SheetofGRNAMBLED1LED2123SW6ENTER1 34 25SW7MUTE1 34 25SW1POWER1 34 25

10.PCB LAYOUT DIAGRAMViewSonic Corporation 32Confidential – Do Not CopyVG900b-1

1.PRECAUTIONS AND NOTICESPrior to using this manual, please ensure that you have carefully followed all the procedures outlined in the user manual for

2.SPECIFICATIONS 1.SpecificationsLCD panel type19.0” TFT(Fujitsu) Power Consumption48 W (typ)Displayable Resolution SXGA 1280 x 1024 maximum Pixel dim

3.LOCATION OF CONTROLS3.LOCATION OF CONTROLSViewSonic Corporation 3Confidential – Do Not CopyVG900b-1

The " adjusting procedure" of VG900b model1. Turn off the display by power button key on the front of bezel,2. Disconnect the DC power cable

5.BLOCK DIAGRAM FROM A/D ADAPTOR INTERFACE BOARD(DPWBN5419T8---A) COMPUTERGRAPHIC

YES NOONOFFGREENHsync,VsyncOr DE error ORANGE OSD no response Picture too dim The brightness is different between upper and low